Patents
Patents for G10L 25 - Speech or voice analysis techniques not restricted to a single one of groups (4,910)
12/1995
12/21/1995CA2169366A1 Method and device for encoding signal, method and device for decoding signal, recording medium, and signal transmitting device
12/13/1995EP0686266A1 Arrangement for detecting the actual value of a measurement at high potential
12/07/1995WO1995029480A3 Analogue signal coder
12/06/1995EP0685835A1 Speech recognition based on HMMs
12/05/1995US5473759 Sound analysis and resynthesis using correlograms
12/05/1995CA1337708C Adaptive multivariate estimating apparatus
11/1995
11/22/1995EP0683481A2 Voice operated game apparatus
11/02/1995WO1995029480A2 Analogue signal coder
10/1995
10/25/1995CN1110884A 失帧的隐蔽 Frame loss concealment
10/25/1995CN1110883A Rejected frame concealment
10/18/1995EP0677202A1 Discriminating between stationary and non-stationary signals
10/18/1995CN1110486A Transmission error concealment
10/17/1995US5459814 Voice activity detector for speech signals in variable background noise
10/12/1995WO1995027335A1 Method and device for encoding information, method and device for decoding information, information transmitting method, and information recording medium
10/11/1995CN1110070A Discriminating between stationary and non-stationary signals
10/10/1995US5457769 Method and apparatus for detecting the presence of human voice signals in audio signals
10/04/1995CN1109697A Vector quantizer method and apparatus
09/1995
09/27/1995CN1109264A Transmission system comprising at least a coder
09/27/1995CN1109263A Transmission system comprising at least a coder
09/20/1995EP0673014A2 Acoustic signal transform coding method and decoding method
09/19/1995US5451951 Method of, and system for, coding analogue signals
09/13/1995EP0671099A1 A voice activity detector for an echo suppressor and an echo suppressor
09/12/1995US5450484 Voice detection
07/1995
07/27/1995WO1995020216A1 Method and apparatus for indicating the emotional state of a person
07/05/1995EP0473664B1 Analysis of waveforms
07/04/1995CA1336212C Distance measurement control of a multiple detector system
06/1995
06/27/1995CA2011775C Method of detecting acoustic signal
06/06/1995US5422977 Apparatus and methods for the generation of stabilised images from waveforms
06/01/1995WO1995015035A1 Method and apparatus for testing telecommunications equipment
06/01/1995CA2171864A1 Method and apparatus for testing telecommunications equipment
05/1995
05/31/1995EP0655161A1 Lost frame concealment
05/31/1995EP0655160A1 Transmission error concealment
05/31/1995EP0655159A1 Rejected frame concealment
05/17/1995EP0653091A1 Discriminating between stationary and non-stationary signals
05/11/1995WO1995012879A1 Discriminating between stationary and non-stationary signals
05/11/1995CA2151398A1 Discriminating between stationary and non-stationary signals
04/1995
04/26/1995EP0649558A1 Transmission system comprising at least a coder
04/26/1995EP0649557A1 Transmission system comprising at least a coder
04/13/1995WO1995006382A3 A voice activity detector for an echo suppressor and an echo suppressor
04/12/1995EP0647375A1 Method and apparatus for objective speech quality measurements of telecommunication equipment
04/12/1995EP0342687B1 Coded speech communication system having code books for synthesizing small-amplitude components
04/05/1995CN1101214A Method and apparatus for encoding/decoding of background sounds
03/1995
03/28/1995CA1335003C Voice activity detection
03/23/1995WO1995008170A1 Voice activity detector
03/22/1995EP0644674A2 Method of transmission quality estimation of a speech transmission link
03/21/1995CA1334868C Sound synthesizing method and apparatus
03/15/1995EP0643520A2 System and method for passive voice verification in a telephone network
03/07/1995US5396576 Speech coding and decoding methods using adaptive and random code books
03/02/1995WO1995006382A2 A voice activity detector for an echo suppressor and an echo suppressor
03/01/1995EP0640953A1 Audio signal processing method and apparatus
02/1995
02/02/1995DE4324292C1 Method for determining a quantity characterising the quality of digital speech transmission
01/1995
01/18/1995EP0634041A1 Method and apparatus for encoding/decoding of background sounds
01/12/1995WO1994022131A3 Speech recognition with pause detection
01/11/1995EP0633658A2 Voice activated transmission coupled AGC circuit
01/05/1995WO1995001011A1 Method and apparatus for testing telecommunications equipment using a reduced redundancy test signal
12/1994
12/22/1994WO1994029965A1 Code excitation linear prediction encoder and decoder
12/22/1994WO1994029851A1 Transmission error concealment
12/22/1994WO1994029850A1 Lost frame concealment
12/22/1994WO1994029849A1 Rejected frame concealment
12/22/1994CA2140365A1 Transmission error concealment
12/22/1994CA2140364A1 Rejected frame concealment
12/22/1994CA2140363A1 Lost frame concealment
12/20/1994US5375188 Music/voice discriminating apparatus
12/14/1994EP0628232A1 Fractal coding of data
12/13/1994US5373460 Method and apparatus for generating sliding tapered windows and sliding window transforms
12/08/1994WO1994028542A1 Discriminating between stationary and non-stationary signals
12/08/1994CA2139628A1 Discriminating between stationary and non-stationary signals
11/1994
11/24/1994WO1994027286A1 Process for vector quantization, especially of voice signals
11/24/1994WO1994027285A1 Vector coding process, especially for voice signals
11/17/1994EP0624866A2 Method for frequency analysis
11/17/1994EP0405548B1 System for speech coding and apparatus for the same
11/17/1994DE4315677A1 Circuit arrangement for determining the fundamental frequency from a signal which is not bandwidth-limited and contains harmonics and interference signals, in particular for determining the fundamental voice frequency from a voice and speech signal
11/10/1994WO1994025961A1 Transmission system comprising at least a coder
11/10/1994WO1994025960A1 Transmission system comprising at least a coder
10/1994
10/13/1994WO1994023519A1 Method and apparatus for voice and modem signal discrimination
10/13/1994WO1994023426A1 Vector quantizer method and apparatus
10/11/1994US5355431 Signal detection apparatus including maximum likelihood estimation and noise suppression
10/04/1994US5353372 Accurate pitch measurement and tracking system and method
09/1994
09/29/1994WO1994022131A2 Speech recognition with pause detection
09/07/1994EP0614171A1 Voice signal processing device
09/07/1994EP0614170A1 Voice signal processing device
09/07/1994EP0614169A1 Voice signal processing device
09/01/1994WO1994019792A1 Sound analysis and resynthesis using correlograms
09/01/1994WO1994019700A1 Arrangement for detecting the actual value of a measurement at high potential
08/1994
08/10/1994EP0609770A1 Method of estimating the pitch of a speech acoustic signal and speech recognition system using the same
08/09/1994US5337251 Method of detecting a useful signal affected by noise
08/04/1994WO1994017515A1 Method and apparatus for encoding/decoding of background sounds
08/04/1994CA2133071A1 Method and apparatus for encoding/decoding of background sounds
06/1994
06/14/1994US5321636 Method and arrangement for determining signal pitch
06/01/1994EP0599664A2 Voice encoder and method of voice encoding
05/1994
05/31/1994CA2026823C Pitch period searching method and circuit for speech codec
05/31/1994CA2019801C System for speech coding and an apparatus for the same
05/18/1994EP0597126A1 Method for compressing sound information and apparatus for reproducing sound information
05/17/1994US5313553 Method to evaluate the pitch and voicing of the speech signal in vocoders with very slow bit rates
05/11/1994EP0596785A1 Method for the discrimination of speech in presence of ambient noise and low bit-rate vocoder to implement the method
05/04/1994EP0347307B1 Coding method and linear prediction speech coder
04/1994
04/07/1994DE4316297C1 Audio signal frequency analysis method - using window functions to provide sample signal blocks subjected to Fourier analysis to obtain respective coefficients.
04/06/1994EP0590155A1 High-efficiency encoding method
03/1994
03/15/1994US5295225 Noise signal prediction system
03/15/1994US5295190 Method and apparatus for speech recognition using both low-order and high-order parameter analyzation
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